Tuesday, November 9, 2010

First Downy Mildew oilspot has been seen in McLaren Vale.

Matthew Wilson has found a single oilspot in McLaren Flat confirming the thoughts of McLaren Vale CropWatch and the DJ's staff that McLaren Flat was likely to have some Downy Mildew from the weather of the 29th and 30th of October.


Above - A single oilspot that has been put through the Downy Mildew bag test to confirm it is a 'real' oilspot.

What does this mean?

Downy Mildew is a rare disease and one oilspot does not mean an outbreak will occur. It is not the time for panic spraying.

What we do think is this;

Firstly, we can have confidence in the weather data from the McLaren Vale CropWatch weather station. It showed a very near miss for a Downy Mildew (10:10:24 Event), which meant that there was some chance of oilspots occuring nearby where the weather was slightly wetter for a longer time.

Secondly, growers in the Northern half of McLaren Vale should keep up Downy Mildew protection in few that rain is forecast for Saturday.

As always if you have any questions about your specific situtation ring us on 08 8323 8339.

No comments: